Calculating machine



April 3, 1934. J. E. w. GREVE.

CALCULATING MACHINE med March 15. 1929 5 Sheets-Sheet 1 April 3, 1934- J. E. w. GREVE 1,953,557

CALGULATING MACHINE Filed March 15, 1929 5 Sl'Aeets-SheeI 2 April s, 1934.

J. E. w. GREVE 1,953,557

CALCULATING MACHINE Filed March 15, 1929 5 Sheets-Sheet 3 April 3, 1934.

J. E. W. GREVE CALCULATING MACHINE Filed March 15, 1929 5 Sheets-Sheet 4 IMI 710) o ses April 3, 1934. '.1. E. w. GREVE GALCULATING MACHINE Filed March 15 1929 5 Sheets-Sheet 5 Patented Apr. 3, 1934 UNITED STATES CALCULATING MACHINE John Emil William Greve, Chemnitz, Germany Appiiminn Much 15, 1929, serial No. 341 ,264

In Germany March 20, 1928 2 Claims. (C1. 235--60) My invention relates to improvements in calculating machines provided with printing apparatus and a plurality of registering mechanisms, and the obj ect of the improvements is to provide a machine which is capable of universal use, which is simple in operation, and in which the mechanisms are arranged so that they car. be readily inspected.

For book-keeping, statistical, and similar purposes a calculating machine must be provided with a plurality of main or totals registering mechansms, and in addition it must be provided with a certain number of subsidiary registering mechanisms for diierent accounts or columns. Further, all the registering mechanisms must be constructed so that they can be used either for making additions or subtractions, so that each registering mechanism is able to perform both operations, which is particularly important for permitting erroneously entered gures to be erased from the registering mechanism or to calculate negative results. Further, the registering mechanisms y must be constructed so that the clerk can readily ascertain what registering mechanism has been used in performing a certain calculation, and the clerk must be able at one sight to ascertain whether or not all the registering mechanisms have been reset and the machine is in position for performing a new calculation, means being preferably provided for printing a mark on the paper at -the side of the rst line of the new calculation for indicating that the machine was in proper position.

The objectof the invention is to provide a machine which contains allfthe said advantages, and which is simple in operation and construction, and in which the main groups of the mechanisms are disposed so that in case of need further mechanisms may be mounted in the machine without reconstruction of the whole machine.

For the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawings in which the same reference characters have been u sed in all the views to indicate corresponding parts. In said drawings,

Fig. l is a longitudinal sectional elevation of the machine.

Fig. 2 is a sectional elevation of the front part of the machine showing the main registering mechanism and the gearing controlling the same,

Fig. 3 is a sectional elevation showing the subsidiary registering mechanisms,

Fig. 4 is a partial plan view of the mec illustrated in Figs. 2 and 3,

Fig. 5 is a partial sectional elevation of the ma- -c -hin'e showing the mechanism for setting the countingV mechanisms from position for making additions into position for making subtractions and vice versa,

Fig. 6 isa partial sectional elevation showing 60 or totals registering mechanisms 1 and 2, which y are operated by horizontal racks 10 mounted 7 above the base plate 11 on rails 12 and'13 provided with slotted bars or combs 14 and 15 in which the racks are guided. Rack teeth 16' provided on the racks 10 are in engagement with gear wheels 16 cooperating with vertically shift- 75 able bars 17 carrying types, the said vertical bars being guided between transverse rails 18, 19 provided with slotted bars or combs 21, 22, and a rail 20. The type bars 17 are provided with noses 23 cooperating with setting members 24 shiitable 80 on a setting carriage 25. On a transverse shaft 27 key levers 26 are rockinglyv mounted, which key levers are formed with downwardly directed arms 28, 29 jointed to rods 30 adapted when depressing a key to shift a setting member 24 rear- 85 wardly and into position for limiting the upward movement of the corresponding type bar 17. The construction and operation o! the members 24.- is described in detail in the application for patent of Greve, Ser. No. 464,398, illed April 25,

1921, now Patent Number 1,707,303. The main shalt 31 of the machine is located above the base plate 11 and it is adapted to be rocked in the direction o! the arrow shown in Fig. 1 through an angle of about ,60 by means of a hand operated crank or mechanical driving-means, for operating the machine, and after operation of the machine the said main shaft is automatically retracted into initial position by means ot a spring.

The racks 10 are provided with -downwardly depending arms 32 and 33 engaging in Vslots of guide rails 34 and 35 adapted to hold the racks 10 in vertical positions. A spring 36 attached to the arm 32 tends to shift the racks 10 to the right, and the racksvare held in the normal position shown in Fig. 1 by a transverse rail 37n adapted 'to be shifted by the operation of the machine into the position indicated in dotted lines 37 and to return into initial position upon the return movement of the machine. I! now key levers representing a certain number are depressed and the corresponding setting members 24 advanced the rail 37 is shifted by the operation of the machine into the position 37', and the racks 10 follow the rail by reason of the tension of the springs 36, until the type bars 17 have been elevated-by means of gear wheels 16 into.

position with their noses 23 in engagement with the advanced setting members. Thus the type bars are set into the position corresponding to the said number, and the said number is printed on the paper placed on the platen 40 by the operation of the hammer mechanism 38, 39.

During the said forward movement of the ma# chine the registering mechanisms 1 and 2 are out of engagement with their operating racks, and upon the retlu'n movement of the machine the registering` mechanisms on which the printed number is to be registered are thrown into engagement with their racks, so that the numeral wheels of the registering mechanisms are advanced through angles corresponding to the g- V ures of the printed number.

The main registering mechanisms 1 and 2 are in the form of automatic registering mechanisms, each registering mechanism being provided with operating' racks and carrying mechanisms of its own. The racks 10 are formed with elongated recesses 10' in which driving racks 41, 42 are mounted which are guided on the racks 10 by means of thin steel plates 43, 44 and 45, 46 riveted to the racks 41, 42, the racks 41, 42 being held in position by means o pins 47, 48 and 49, 50. The plates 43, 44 and 45, 46 are provided with arms 51, 52 connected by springs 53,' 54 with hooks` 55, .56 formed on the racks 10. Thus the racks 41, 42 tend to move to the left and into position for engagement with the left hand end walls of the recesses 10' of the racks 10, and they are locked in the position shown in Fig. 1 by pawls 57, 58. The registering mechanisms 1 and 2 are provided with reversing gearings, so that theyY are able to perform additions and subtractions, and each gear wheel of the said reversing gearing is provided with a carrying lug 63 cooperating with noses provided on carrying pawls 59, mounted on shafts 61, 62. When rocking the said pawls by means of the carrying lugs 63 the locking pawls 57, 58 are released, so that the racks 41, 42 are shifted one step to the left in Fig. 1 for performing a carry-ing operation. Similar registering mechanisms are known in machines provided with a plurality of registering mechanisms, but they are not suitable inmachinos provided with a greater nlnnber of registering mechanisms. Therefore in my improved machine the subsidiary registering mechanisms are constructed so that a larger number thereof can be mounted within a comparatively small space. The subsidiary registering mechanisms 3,

- 4, 5, 6, 7 and 3 are-mounted in two groups, and

they are adapted to he operated by guided racks 64, 65 disposed between both groups and having rack teeth at opposite sides. The said racks are provided with slots 66' engaged by a transverse rail 66 xed to the frame of themachine, and for spacing the racks from one another a slotted rail` or comb 67 is provided at theY top end of the rails. The bottom ends 64' and 65e of the lacks are likewise provided with rack teeth in the gear wheels 9 adapted to be operated by the driving racks 10. At their bottom ends the racksr64 and 65 are guided by means of transverse rods 68, 69 provided with i combs 70, 71. The racks 64, 65 are arranged so that two adjacent racks are in engagement with opposite sides of the gear wheel 9, so that upon operation of the said gear wheel the said adjacent racks are moved in opposite directions. Therefore, by laterally displacing the registering mechanisms either additions or subtractions are made.

The carrying operation of the registering mechanisms is performed by means associated with the racks l0. For this purpose the racks 10 are provided at their rear ends with recesses 10" in which racks 72 are mounted which are adapted to be shifted longitudinally of the racks 10 in a similar way as the racks 4l and 42. The racks 72 are in mesh with the gear wheels 9, and they are acted upon by springs 73 tendingI to shift the same to the left and by pawls 74 arresting the same in position. The subsidiary regare jointed to pawls 80 engaging the pawls 74.

If one of the lugs 75 engages its lever 76 the pawl is rocked upwardly so as to release the pawl 75. Thereby a Carrying Operation is started, the pawl 74 being rocked upwardly by a spring 81 and releasing the rack 72 and permitting the same to be .shifted one step to the left. As appears from Fig. 1, the arms 82 of the right and left hand sets of rods 77 and 79 are moved respectively downwardly and upwardly by the 1evers 76. The intermediate levers 78 are rockingly mounted at 84 on a slotted transverse member 83, and they are guided at both ends in combs 85 and 86. At their bottom ends the rods 77 are held in the position shown in the Iigures by rails 87 and 88 and a comb 89. By providing the means for performing the additional carrying movement on the main rack 10 of the machine, for all the registering mechanisms only one movable rack is needed.

By providing the subsidiary registering `mechanisms 3-8 in the manner described the carrying levers 76 are locked by the gearing 77, 78, 79 when taking sums and partial sums by means of one of the said registering mechanisms. In machines in which numeral wheels are adapted to be rotated in either direction for making additions and subtractions the carrying levers must be locked when taking sums or partial sums, be-

cause they must provide a stop for setting the registering mechamsms. In my improved machine it is not necessary individually to lock the carrying levers 76, but the gearing 77, 78, 79 is locked, for which purpose the levers 78 are provided with noses 78' adapted for engagement with a rail 328 mounted on a rock shaft 329. To a lateral arm of the said rail a link 320 is jointed which is connected at its opposite end with a key 290 -for taking sums (Fig. 8). In the drawings the said connection has not been illustrated. If now the said key 290 is depressed the rail 328 is rocked into position below the noses' ends of the levers 98 to 101.

1,953,557 be in operative position. The racks 64and 65 are double acting, and therefore the frame of the registering mechanism is constructed accordingly, and it consists of side members 90,y 91 and 92, 93 which are rigidly connected with each other in pairs by transverse rods 94, 95 and 96, 97.v Thus two frames are provided for the registering mechanisms, and the said frames are carried by levers 98, 99 and 100, 101.-mounted in the manner of pairs of scissors on bolts v103, 104 fixed to the frame 105, 106 of the machine, the levers being provided with hubs 102. By Ameans .of screws 107, 108 the lateral members of ,the frames of the registeringY mechanisms are joined vto the bottom ends of the levers 98 to101, and the said side members are guided at their top ends bymeans of pins 109, 110 engaging in the bifurcatedtop By mounting the levers in the manner of scissors the frames of the registering mechanisms are rocked relatively to each other in opposite directions when one of the frames of the registering mechanisms is operated.

In order to permit the registering mechanisms to be individually thrown into and out of operation, the said registering mechanisms are movably mounted on the frame of the registering mechanisms. As appears from Figs. 3 and 4, the individual registering mechanisms are mounted on side members 113 formed with rails 112 guided in guide ways 111 provided on the side members rails 116 and 117. In the position of the parts f shown in' Fig. 3 the reg'stering mechanism 7 is Yin operative position, and the other registering mechanisms are in inoperative positions, and they are held in the said inoperative positions by means of transverse rails 118 secured to the-,stationary frame 105, 106 of the machine by plates 119. The said rails are passed through slots 118' of the side members 9093 of the registering mechanisms, and they do not take part in the movement of the said frames. The side walls 113 of the individual registering mechanisms are bent outwardly at 120 (Fig. 4); and to the said bent ends 120 springs 121 are attached which are connected with their opposite ends to the rails 118. The springs pull the registering mechanisms loutwardly and with the rollers 114 into engagement with the rails 116, 117. The said rails bear with their outer edges on .rollers 123. 124. and they are held in the said positions by means of screws 125. 126. The rails 116. 116 and 117, 117 are respectively connected with each other by transverse members 127, 128 riveted thereto so that when operating the rails the lugs 115 thereof simultaneously operate the rollers 114 of the. movable registering .mechanisms at both sides. The arm 129 of a bell crank lever 129, 129 rockingly mounted on the bolt 103 is connected by a link 130 with a lever 132 mounted on a fixed bolt 131, the said lever 132 being provided wlth a crank arm 133 by means of which the registering mechanisms 3 to 8 can be thrown into and out of operation. 'Ihe arms 129' of the bell crank lever are connected by links 134, 135

with the rails 116, 117, and when shifting the setting lever 132, 133 the-rails take part l'in such movement. The positions of the lugs 115 of the rails are such that one of the said lugs engages the rollers 114 of a registering mechanism when thecrank 133 is in normal position, and the distances between the rollers are such l,that only one registering mechanism can be thrown into operative position when the lever 133 is in oprative position. The rails 116 are provided with three lugs 115, while the rails 117 carry only two.

lugs, the lower lugs 115r of the rails 117 being adapted to advance both registering mechanisms 3 and 8 respectively in their elevated and lowered positions. y

The lugs of the subsidiary registering mechanisms 3 to 8 act on the pawls 76, and the lugs and the`pawls are always in exact relat'on because the pawls 76 are lmounted on the shafts 76' held by the side frames 113 of the registering mechanisms sothat the pawls 76 take part in all the movements caused either by throwing the registering mechanisms into operation orvby moving the same in the course of the operation of the machine. The length of the arms 82 of the rails 77, 79 is such that in each position of the registering mechanisms a part 762 of the pawls bears thereon. Upon displacement of the entire regis-A tering mechanisms 3 to 8 in longitudinal direction for performing additions or subtractions the rails 77 and 79 remain in their positions.

The main registering mechanisms 1 and 2 are separately mounted on acommon frame rockingly mounted onfa shaft 136 and consisting of two side members 137, 138 adaptedto be operated by levers 139,140 connected therewith by links 141, 142. Thus the frame 137, 138 of the registering mechanisms is operated at both sides,Y

which results in an exact engagementof the parts of the yregister'ng mechanisms. The registering mechanism 1 is rockingly mounted at 145 between two levers 143 and 144. which levers are rockingly mounted at 146 on the frame 137, 138 of the registering mechanisms. The levers 143,

144 are made integral with a downwardly directed arm 143' carrying rollers 147, 148 cooper- A ating with controlling rails 149, 150 bearing with their ton edges 'on guide rollers 151. 152 and 153. The rails 149. 150 are held in position in their said rails are connected with each other at their middle by abridge 156, so that the rails need be operated at one sidel only through the interme-` diary of a link 157 connecting the rail 149 with guide ways by means of screws 154` 155, and the a controlling lever 158, 159 rockingly mounted at I 'I i 158'. .To the oosition of the parts shown in Fig. 2 the rollers'14'7. 148l of the registering mechanism 1 arepressed downwardly in opposition to the tension of springs 160' by lugs 161 formed on the rails. and registeringr mechanism4 1 is'in engagement with its controlling racks 41. as is okn'vn in wie;- 1 Vfhnnghifh'no the ralq 140V 150 so far to the right thatV the rollers 147 and 148 are disengaged from the lugs 161 the sorings 1.60 lift the arms 143. 144 of the registering mechanism so far that the said registering mechanism is out of engagement with' its racks.

The registering mechanism 2 is mounted on the main frame 137, 138 in the same way as has been described with reference to the registering mechanism 1, and the controlling rails 149, 150

be -individually thrown into operation, or both registering mechanisms can be simultaneously thrown intofoperation.

The registering mechanisms are controlled in the usualv way from the main shaft 31 which is operated either by means of a. hand crank or by mechanical means, and in this operation a shaft 163 is rocked forwardly and backwardly through an angle of about in a similar way as the main shaft 31. On a bolt 165 fixed to the side wall oflthe' machine a rocker 164 is mounted, which is provided with arms 164', 164 carrying pins 166, 167 cooperating respectively with the controlling lever 168 and a reversing pawl 169.`- In the normal position of the machine the registering mechanisms are in engagement with their operating members, and when performing an addition or subtraction they are thrown out of operation at the beginning of the operation of the machine, whereupon the controlling racksconnected with the depressed keys areA shifted. Upon the return movement of the machine into the normal position the controlling racks are returned into initial position, and the registering mechanisms are thrown into engagement therewith before the said movement is performed so that the number set by means of the keys is transmitted to the registering mechanisms. With theJ shaft 163 a lever 170 is rigidly connected the top end of which carries a pin 171 having the reversing pawl 169 rockingly mounted thereon, a spring 172 tending to hold the said pawl in the position corresponding to the median line of the lever 170. But a linger 169 formed on the pawl 169 prevents the pawl 169 from assuming this median position, the said finger being pressed downwardly by the pin 166. When rocking the lever 170 in theV direction of the arrow the reversing .pawl is pressed against the pin 166, so that the rocker 164 is rocked about its axis 165 in the direction of the arrow shown in Fig. 2. The other pin 167 engages a pawl 168 provided at the bottom part of the controlling lever 168, so that also the lever 173 connected with the lever 168 is rocked in the direction of the arrow. The lever 173 isloosely mounted on a round pivot bolt of a shaft-174 havlng a square cross-section, and it is connected by a'. spring 175 with vthe bell crank lever 139. The bell crank levers 139 and 140 are rigidly secured to the shaft 174, and they are held in the position shown in Fig. 2 by a toggle joint comprising links 176 and 177, the link 176 being connected with the lever 139, and the link 177 being rockingly mounted on a bolt 173 xed to the frame'ef the machine. A spring 176' tends to force the links 176, 177 of the toggle joint into alignment and with a stop 179 provided on the link 176 into engagement with an arm 180 formed on the link 177. When operating the machine in forward direction, the part 164 is rocked by the pawl 169 in the direction of the arrow shown in Fig. 2, as has been described above, and the pin 167 provided on the member 164 carries along the lever 168 so that the lever 173 takes part in the said movement- The levers 173 and 139 are loosely connected with each. other by means of a pin 181 carried by the lever 139 and engaging in a slot 182 made in a laterally projecting arm of the lever 173- Therefore, at the beginning of the operation of the machine the links of the toggle joint 176, 177 are forced into alignment by means of a. link 183. If now the lever 173 has performed its dead movement relatively to the pin 181 engaging in the slot 182, thel bell crank levers 139 and 140 take part in the-further movement of the arm 173, whereby the'frame 137, 138 of the registering mechanism is elevated with the registering mechanisms 1 and 2 out of engagement with their racks. After the lever 170 has completed its forward movement the nnger 169' of the pawl 169 bears on the lower pin 167, and upon the return movement of the ma.-

chine the member 164 is returned into the position shown in Fig. 2 by the pawl 169 shifting the pin 167 in the reverse way as the pin '166 had before been shifted. Through the intermediary of the lever 168 the other parts of vthe gearing are returned into their initial positions. In order to permit the gearing above described to act on the main registering mechanisms as well as on the subsidiary registering mechanisms the levers 139,140 are in the form of bell crank levers, and they are loosely connected at their top ends by screws 184 with links 185, 186 the opposite ends of which are jointed to pins 187, 188 of the frame 92, 93 of the registering mechanism. By connecting the said frame with the frame 90, 91 by means of levers in the form of a pair of scissors both frames are simultaneously operated by the gearing, which therefore acts on all the registering mechanisms of the machine.

For reversing the registering mechanisms from the positions for making additions to the positions for making subtractions, -and vice versa, separate yshiftinglevers are provided for the main registering mechanisms, while the subsidiary registering mechanisms are provided with a common shifting lever. The main registering mechanisms, are in the form of reversing gearings the gear wheels of which are in pairs in mesh with each other and are rockingly mounted at 145, y

1451 (Fig. 5). The side members 189, 1891 carry rouers 19o, 191- and 192, 193 cooperating with cam levers 194, 195 rockingly mounted on pins 196, 1961 xed to the frames 143, 144, 1431, 1441 of the registering mechanisms. In the position of the parts shown in Figs. 2 and 5 the registering mechanisms 1 and 2 are in positions for performing subtractions, and the shifting levers 197 and 198Y have been set in the positions corresponding to additions. In the machine shown in the drawings the registering mechanisms are not adapted to be directly shifted by hand from the positions corresponding to additions to the positions corresponding to subtractions, and vice versa, but they are shifted while the machine is in operation, and therefore by shifting the levers 197 and 198 the shifting operation is only prepared, the registering mechanisms 1 and 2 being shifted afterwards by means of the cam levers 194 and 195 provided at both sides of the registering mechanisms in order to insure the exact engagement of the gear wheels with their operatv ing members. By rcel-:ing the lever 197 into the position shown in the figures a bell crank lever 201 rockngly mounted at 200y is rocked by means of a link 199 into the position in which a pin 202 can'ied by the downwardly directed arm of the lever has released an arm 203, which therefore was able to move downwardly until a finger 204 made integral therewith bears on a pin 206 carried by a lever 205. The arm 203 is loosely connected by screw 207 with a lever 208 xed. to a shaft 209. To the top end of the saidlever a.

pin 210 is fixed which is engaged by an arm 211 adapted to be operated by means of an arm 212 fixed to the shaft 163. When operating the machine with the parts in the positions shownv in Fig. 5 the shaft 163 is rocked in the direction of the arrow shown in the said figure, the arm l 1,953,557. 211 engages the pin 210 and rocks the shaft 209 supporting the bifurcated arm 203, which arm rocks the lever 205 about its fulcrum 213, whereupon a shaft 215 carrying an arm 216 is rocked 'through the intermediary of a short link 214 in the direction of the arrow shown in Fig. 5. To the shaft 215 a second arm 216' is fixed, and the said arm is connected by links 217, 2171 with downwardly directed arms of the cam4 levers 194, 1941. When the shaft 215 is rocked in the direction ofthe arrow shown in Fig. 5 the links 217 and 2171 rock the cam levers 194, 1941 so that the rollers 191 ride downwardly on their cams, vwhile the rollers 190 are lifted by their cams. Therefore the registering mechanism 1 is rocked about its fulcrum 145 in a direction for throwing the opposite gear wheels into engagement with thel driving racks, which corresponds to the adding position of the registering mechanism. f

Instead of directly operating the arm 203 from 3 the lever 212 the intermediate shaft 209 and its lever 208 are provided, the function of the said parts being to interrupt the shifting operation started by operating the switch lever 197 when shifting the paper carriage or the like. On the shaft 209 there are two further levers 2081 and 2082 each of which carries a controlling arm similar to the arm 203, which parts have not been shown in the drawings because they are covered by other parts. Further, on the shaft 213 two levers 2051 and 2052 are loosely mounted one behind the other which are used for shifting the registering` mechanismZ and for reversing the subsidiary registering mechanisms from the position for making additions to the position for making subtractions.

In the`lposition of the parts shown in Figs. 2 and 5 the registering mechanism 2 is likewise set for making subtractions, and the shift lever 198 is in position for making additions. the machine the arm 2031 would rock its lever 2051, and the shaft 218 wouldbe rocked by means of lever 219 through the intermediary of the link 220 in the direction of the arrow. The lever 219 is fixed to the shaft 218 and at its rear there is another lever 2191, and both levers areccnnected by links 221, 2211 with the downwardly directed arms of the cam levers 195 and rock the 'same so thatA the rollers 193 slide downwardly from the cams, while the` rollers 192 are elevated by the opposite cams. Therefore the shifting operation is performed exactly in the same way as has been described with reference to the registering mechanism 1. For shifting the apparatus from the position for performing subtractions to the position for performing additions the operation is exactly the reverse, and the lever 197 for registering mechanism 1 is set into position for 'making subtractions, thereby the link 199 is shifted and `the lever 201 is rocked, the said lever lifting its arm 203 by means of the pin 202 so far that the upper arm 2031 of its bifurcated end is in the path of the pin 2061.

When operating the machine the arm returns the pin 2061 into the position shown in Fig. 5, the link 214 carries-along the arms 216, '2161,' and I the said arms return the cam levers of the registering mechanism 1 into the position shownin the figures through the intermediary of the links 217, 2171. Now the registering mechanism is in the position'for performing subtractions. The registering mechanism 2v is shifted exactly in the same way.

The subsidiary registering m are not When operating in the form of reversible registering mechanisms, but they are adapted to be rotated by their driving members in one or the other direction for performing additions or 'subtractions. For this purpose the registering mechanisms are adapted to be shifted in ylateral ldirection in order to throw the same into engagement with either one' of two sets of racks. The levers 98, 99 carrying the frames 90 to 93 of the subsidiary registering mechanisms are supported on the bolts 103, 104 so as to be longitudinally shiftable thereon, and for thus shifting the said levers a bar 222 formedwith a cam slot 2221 is mounted for being shiftable on a part 223 carrying a screw 224 passed through a slot 22211 ofthe said bar. The opposite end of the bar is loosely connected by means of a pin 225 with' the upwardly directed arm of a'- made integral with the lever 2052. The frame 93 of the subsidiary registering'mechanisms carries a laterally projecting arm 230 carrying a roller engaging in the cam slot 2221 of the bar 222. In the position of the parts shown in Fig. 4 the registering mechanisms are in the position for making subtractions, and the shifting lever 197 is in position for performing additions. When operating the machine the third one of the arms 2032 rocks the bell crank lever 2052, and the cam bar 222 is shifted in the direction of the arrow indicated in Fig. 5 through the intermediary of the link 228 and the bell crank lever 226. Therebythe frameof the subsidiary carrying mechanisms is shifted laterally with all the registering mechanisms mounted thereon so far that the said i racks. When setting the lever 1971 into position" for performing subtractions the frame of the registerng'mechanisms is shifted in the opposite direction.

All the registering mechanisms of the machine are invisible, and the lfigures set thereon can not be read by the attendant. Therefore means are provided for indicating the registering mechaniams having numbers set thereon. It will be understood that similar means may also be useful in machines having visible registering mechanisms,l because it is diicult at one sight to examine a plurality of registering mechanisms, and therefore the registering mechanisms can be more readily examined. As shown in the figures, the front wall of the casing enclosing the operative parts of the machine is formed with a peep hole 280, as is shown in Figs. 1, 6 and 7, and at the rear of the said peep hole there "are indicating members 279 carrying figures or other indications, which gures are displayed as soon as one of the registering mechanisms of the machine has been i operated. .The number of the indicating mem- Anumbers of the registering mechanisms whichy have Vbeen operated At the rightof the saidA figures there are small figures representing the number to be inserted'into the machine by depressing the keys. However, this apparatus does not forni a part of my present invention.

On their downwardly directed ends the ligure key levers 26 mounted on the shaft 27 are formed Between frame members 233 and 234 of the machine a square shaft 237 is mounted on trunnions 235 and 236 which is shiftable in transverse direction, and which has two arms 238 and 239 secured thereto. At the upper ends of the said arms a shaft 240 is secured which is straddled by bifurcated arms 241 jointed by a pivot bolt to a bell crank lever 242, 243 mounted on a shaft 244. The said shaft is supported on the frame members 233, 2331 of the machine. For each registering mechanism a bell crank lever 242, 243 is provided, and the arms 241 jointed thereto are spaced from each other at their bottom ends in lateral direction by a guide rack 245 secured to the shaft 240. Ona laterally projecting lug ofthe arm 239 a pawl 246, 247 is rockingly mounted which is normally held in the position shown in Fig. 6 by a spring 248. When operating the machine the driving shaft 31 rocks a square shaft 249 mounted in the frame of the machine in the direction of the arrow shown in Fig. 6. On the said shaftan arm 250 is mounted which is connected by a link 251 with a cam lever 252 so that the said cam lever takes part in the rocking movement of the shaft 249. The cam lever is rockingly mounted on a trunnion made integral with the shaft 237, and it cooperates with the pawl 246, 247 in the manner to be described hereinafter. On shafts 253, 254 fixed to the machine, levers 255, 256, 257 are rockingly mounted. The lever 255 is provided with a shoulder 258 held in engagement-with a lug 259 of the lever 256, 257 by a spring 260, whereby the said lever is held in the position shown in Fig. 6. To the universal bar 232, Fig. 9, an arm 261 is xed by rivets, which engages a pin 262 carried by an arm 263 whenever a figure key is depressed, thus rocking the arm 263. The arm 263 is likewise rockingly mounted on the said trunnion provided on the shaft 237 and it is held in the position shown in Fig 6 lby `a spring 264. At its upper end the arm 263 carries a pin 265 adapted to hold the pawl 246, 247 in normal position. When rocking the arm 263 by depressing a key, the said arm is held in rocked position by a pawl 266 engaging a downwardly directed heel of the arm, and the pawl 246, 247 is rocked by the vspring 248, so that the forwardly di.- rected arm `of the pawl engages the concentric part of the cam lever 252. If now the machine is operated in forward direction the shaft 249 is rocked in the direction of the arrow shown in Fig. 6, and the cam lever 252 is carried along, a nose 267 formed thereon engaging the pawl 246 so that the arms 238, 239 take part in the last part 0f the forward movement of the machine. The arms 238, 239 are fixed to the shaft 237, and they provide a closed frame with the rod 240 and the comb 245, which frame is operated upon each operation of the machine whenever figure keys have been depressed. Thereby a rocking movement is imparted to the arms 241.

In Fig. 6 the controlling lever 159 for the main registering mechanisms is shown in its normal position 0 Fig. 6. When rocking the said lever about its pivot bolt 1581 a link 268, 269 provided with rack teeth 2681 rotates a pinion 270 provided on the shaft 271 mounted between the frame members 233, 2331 of the machine. The pinion 270 is formed with an elongated hub 2701 carryim;r two disks C272, 273 formed with notches 274.

In the normal position of the lever 159 the downwardly directed arm 243 of the bell crank lever 242, 243 bears on the circumferenceof the said disks by the action of the spring 242', and the notches 274 are disposed so that when rocking the controlling lever 159 into first position 1, Fig. 6, the disks are rotated bynthe pinion 270 so far that the first bell crankv lever 242, 243 from the left, Fig. 8, comes into engagement with the said notch 274 of disk 272. When further rocking the lever 159 into the second position 1 and 2, Fig. 6, the said disks are further rotated so that since the notch 274 in disk 272 does not end in front of the notch in disk 273 but partly covers the same, the lever 243 belonging to the disk 272 remains rocking and consequently in each disk 274 and 273 a notch 274 is in position for engagement with the rst and the second lever 243 so that4 the first and second lever engage in the said notches and consequently the lever 243 is now in the notch of the disk 273 for the registering mechanism 2. This position of the controlling l'ever 159 is therefore designated 1 and 2. If the controlling lever 159 is now brought into position 2, its lever 243 remains rocking because the notch 274 in'disk 273 is of suicient length. However, the lever 243 of the disk 272 is returned by the 'edge of its notch 274 to its normal position. It is obvious that by rocking the lever 242, 243, the bifurcated part 241 is lowered so that an extended part 241' of the fork bears in front of a pin 275.

It may now be assumed that all the registering mechanisms of the machine are in their zero positions, and that it is desired to calculate by means of the registering mechanism l. For this purpose the attendant rocks the controlling lever 159 into the position indicated in Fig. -6 by the numeral 1. Thereby the links 268 rotate the pinion 270 in the manner just described, so that the disk 272 is rotated with its notch 274 in position for engagement with the downwardly directed arm 243 of the bell crank lever 242, 243, so that the said bell crank lever is rocked, and the arm 241 is `moved downwardly.. If -now figure.. keys aredepressed and the universal bar 232, Fig. 9, is operated, the arm 261 carried by the said universal bar engages the pin 262 and rocks the arm 263 in anti-clockwise direction, the said arm being locked in rocked position by the pawl 266. Consequently, the pin 265 releases the pawl 246 which is then pulled downwardly by the spring 248 and upon operation of the machine the cam lever 252 engages the pawl, and the arms 238, 239 carrying the shaft 240 are rocked, so that the extension of the bifurcated arm 241 engages the pin 275 and throws the parts 258 and 259 out of locking engagement. Therefore the lever 256, 257 is rocked by the spring 260 until it strikes on a xed pin 277. The arm 257. is connected with the indicating member 279 which is guided at its top end by a rail 278. Below the peep hole 280 the indicating member is provided with a figure 279l which is displayed through thexsaid peep hole after the lever 257 has elevated the indicating member 279.

If it is now desired to calculate -by means of registering mechanism 2 the controlling lever 159 is rocked into its left hand end position. Thereby the pinion 270 is rotated so far that the notch 274 of the disk 273 is in position for cooperation with a roller 299 (Fig. 8).

tric partof the cam lever 252, so that upon operation of the machine the said cam lever causes rocking movement o f the bifurcated arms 241 by means of the nose 267. Now the second one from the left of the bifurcated arms 241 has been shifted downwardly. Therefore the levers 255, 256, 257 of the second orderare released, and the indicating vmember 279 of the said second order' is shifted upwardly, so that the figure 2 appears in the peep hole.

The subsidiary registering mechanisms can be set at will by means of the lever 133, and the indicating mechanism connected therewith is operated in the same way as the indicating mechanisms of the main registering mechanisms. For example, when setting the lever 133 into position for throwing the subsidiary registering mechanism 5 into operation, the toothed link 281, 282 of the said lever rotates a. pinion 283 (Fig. 8) secured to the shaft A 271. The machine shown in the drawings is equipped with six subsidiary registering mechanisms, and accordingly the said shaft carries six disks 284 to 289 adapted to control by means of their notches 274 the cooperating bell crank levers 242 and 243. The lever 133 set into position for throwing the registering mechanism 5 into operation has rotated the shaft 271 so far that the notch of the disk 286 is opposite to the lever 243 located in the fifth order from the left of the machine, so that the arm 241 of the said order is moved downwardly. Therefore, upon operation of the machine the indicating member 279 of the fifth order is shifted in the manner described above, so that the figure 5 appears in the peep hole. Therefore the indicating members show that the registering mechanisms 1, 2 .and 5 have been operated, while the other registering mechanisms are still in their zero positions. The indicating members 279 remain in indicating position until an adding operation is performed by means cf the said registering mechanisms, whereupon the registering mechanisms are reset. By an additional movement of the indicating members 279 derived from the carrying mechanism of the registering mechanisms the construction -can be made so that another sign is given showing whether the number transmitted to the registering mechanisms is positive or negative. All the registering mecha.- nisms being controlled'by a single controlling mechanism a single adding key 290 is needed, and

y the adding key lever is mounted on the shaft 27 carrying the figure key levers. When depressing the key 290 a bell crank lever 291 mounted at 2911 is rocked and through the intermediary of a. link 292 a link 293 mounted on a stationary pivot bolt 294 is rock able on its trunnions 235, 236 transversely of the machine and it is normally held in the position shown in Fig. 8 by a spring (not shown). At its top the lever 293 is formed with a cam engaging Therefore when rocking the lever 290 the shaft 237 is shifted towards the middle of the machine, a bevell'ed part 300 of the lever passing between the said roller and the side wall 233. Together with the shaft 237 the arms 238, 239 and the parts 240, 245 are shifted in lateral direction and therefore also the downwardly Vdirected ends of the arms 241, so that the part `with the pinsY 275, butv 2411 does not cooperate with the pins 276.

A sum can always be taken only by means of one registering mechanism, and therefore locking means (not shown) are provided for the adding key lever for preventing operation of the key The shaft 237 is s hift-' when a plurality of registering mechanisms are in operative positions. If it is desired to take a sum by vmeans of registering mechanism 1 the crank arm 133 is vset in zero position, and the controlling lever 159 is set in the position indicated by the numeral 1. The adding key 290 is now depressed, and the shaft 237 is shifted in lateral direction by means of the crank lever 291 and the links 292, 293, so that the arms 241 are in position for engagement with the pins 276. Now only one registering mechanism 1 is in operative position, and therefore only the first arm 241 from the left-has been moved downwardly, and upon operation of the crank the said arm engages the pin 276 and returns the lever 257 into the position shown in Fig. 6 in which it is locked by the lug 259 engaging the shoulder 258. In` the same way at the end of the adding operation the sums are taken in the registering mechanisms 2 and 5, whereupon all the registering mechanisms are in their zero positions, which fact is shown to.

the attendant through the peep which no figures are visible.

It may happen that with all the registering mechanisms in their zero positions zeros are inserted into the machine by depressing the proper keys. Therefore the universal bar 232 cooperates only with the figure keys and the adding key, and it is not acted upon by the zero keys. Further, it may happen that a number is entered into the machine by depressing keys, and that thereafter the said number is erased by means of a correcting lever 301. Further, it may happen that figures are printed without being transmitted to the registering mechanisms, a key 302 being provided for this purpose. Upon operation the correcting lever 301 and the key 302 act on the pawl 266 and cause the lever 263 to be retracted into normal position by the spring 264, whereupon the pawl 246 is out of position for engagement with the nose 267, and the arms 241 are not rocked when operating the machine. Though the arms 241 corresponding to the operative registering mechanisms have been moved downwardly, the indicating members 279 are not set in such cases into displaying positions.

The printing mechanism of the machine is so connected with the indicating mechanism that upon operation of the machine with allthe registerlng mechanisms in zero positions a sign is printed on the paper. For this purpose a universal bar 315 is provided which is mounted on the shaft 27 by means of arms 303. A spring 31'6 is connected to one of the arms 303 and tends to rock the universal bar, but normally the universal bar is locked in position by a pin 304 carried by a link 305. Upon operation of the machine the shaft 249 is rocked, and by means of an arm 306 secured to the said shaft and connected with the link 305 the pin 304 is moved out of position for engagement with the universal bar 315, so that the said bar can be rocked by the spring 316 into potion in front of the arms 256 of the setting levers of the indicating members. From the arm`303 an arm'307 extends upwardly which is provided with a pin 3071 engaging in the slot 3081 of a biturcated lever 308 secured to the shaft 309. The shaft is provided at its ends with trunholes 280 in nions 317, 318 by means of which it is rockingly mounted on the walls 234 and 319 of the frame, and at its opposite end it carries an arm 415 provided with a pin 310, the said arm holding a lever 311 in the position shown in Figs. 6 and 8. When operating the machine the types 327 are lifted into printing position, whereupon the hammers tions, and now the noses 38 arc thrown against the said types 'and throw the same against the platen for printing. The number of the type carriers 17 and hammers 38 corresponds to the number of the orders of the registering mechanisms, and in the example shown in the figures there are thirteen type carriers and hammers. In addition a special type carrier and hammer is provided at the right hand side of the machine for printing the sign. The hammers are locked by locking pawls 39 when printing is not desired at a certain part, and printing is automatically controlled by releasing arms 311. When the type carriers are moved into printing positions the releasing arms are rocked downwardly until they bear on lugs 321 provided on the pawls 39. The arms 311 are located on a common shaft 322 disposed between arms 312 held in the position shown in Fig. 6 by a spring 314. In the normal position of the machine the hammers 38 are arrested by a transverse rail 323 adapted to be moved upon operation of the machine in the direction of the arrow shown in Fig. 6, so that slightly before the end of the forward movement of the machine crank the 'said rail 323 impinges on the noses formed on the upper arms of the lever 312 thus rocking the said levers and the releasing arms 311. However, only those releasing arms have been rocked downwardly and into engagement with the lugs 321 the cooperating type carriers of which have been elevated into printing posi- 325 thereof engage the lugs 321 of the cooperating arresting levers 39 andrelease the cooperating hammers 38, which hammers are thrown by springs 326 against the types. Upon the return movement of the machine into initial position all the parts are brought into the positions shown in Fig. 6. This construction is known in the art, and the foregoing brief reference to th'e said parts will be sufficient.

When all the registering mechanisms have been reset and the machine is operated, the pin 304 is moved out of the path of the universal bar 315 in the manner described above, and the upwardly directed arm 307 of the lever 303 rocks' the shaft 309, so that the pin 310 releases the releasing member 311 for printing the sign. The rst type from above of the type carrier 17 for sign printing is always moved upon operation of the machine into printing position, and the nose 325 engages the lug 321, thus releasing the hammer for sign printing. Therefore a special sign is printed on the paper indicating that all the registering mechanisms are in their zero positions.

If now a calculation has been made byv means of one or several registering mechanisms, the corresponding indicating members 229 have been shifted into indicating positions. Therefore one 'or'more of the levers 256 have been'rocked into the path of the universal bar 315, so that upon operation of the machine movement of the said universal bar is prevented. Therefore the mark showing that the machine is disengaged can not be printed.

It is desirable that the said mark be printed together with the first number of a new calistering mechanisms.

culation, and 'therefore the movements of the parts described above are in particular relation. When all tjhe zero posit1ons,which will be indicated` by the indicating members 279-and if a new calculation has begun, the setting of a number on the keys and the operation of the machine prepares the setting of the corresponding indicating members 279. During the initial movement of the machine the pin 304 is moved out of the path of the universal bar 315 which is therefore rocked in front of the arms 256 of the setting levers 257, so that the said mark is printed in the manner described together with the first number. However, by the nose 267 of the cam lever 252 having engaged the pawl 246, and the arms 241 having been capable of rocking movement, the levers 257, 259 for the operative registering .mechanisms have been released for setting the .indicating members 279, but upward movement is prevented by the downwardly directed arms4 2,56 of the said levers engaging the universal bar 315. However, the arm provided with the arresting lug 259 has been able to perform a slight movement, so that the nose 258 cannot be returned. Upon the return movement of the machine into normal .position the pin 304 is returned into the initial position shown in the figures, and thereby the universal bar 315 is retracted by the arms 256 which have only partly been advanced, and which now are able to complete their movements. Therefore the indicating members 279 are moved into indicating positions slightly before the end of the return movement of the machine.

My invention has been described with reference to calculating machines provided with ten keys,'but I wish it to be understood that my invent-ion is not limited to the use in such machines, and that it may be used in connection with other calculating machines and' cash registers.

I claim:

1.A An adding and calculating machine, comprising a plurality of subsidiary registering mechanisms and mechanism for indicating the registering mechanisms which have been operative, indicating members in said indicating mechanism one for each of said registering mechanisms, keys for entering figures into the machine, members for setting the registering mechanisms, means controlled by said keys and setting members for starting the operation of the indicating members, and means controlled by the driving mechanism of the machine for completing the setting of said indicating members.

2. An adding and calculating machine, comprising a plurality of subsidiary registering mechanisms, indicating mechanism showing what registering mechanisms have been in operation and cnmprising indicating members one for each registering mechanism, means operatively connected with the registering mechanisms for setting the said indicating members in position, and means for returning the said indicating members into normal position, said means being operative when taking sums in the reg- JOHN EMIL WILLIAM GREVE.

registering mechanisms are in their 

